What's new in at-spi2-atk 2.0.2:

* Fix matching on attributes for collection methods

* Fix for BGO#650286: Ensure valid UTF-8 from ATK

* Always emit children-changed, property-change, and state-changed events, in
  order to keep caches synchronized.

* Add GetAtspiVersion to fetch the version of the AT-SPI specification provided
  by an application.